Obediah Abbett - 1806 - SC, GA, AL, TX

Am searching for the parents of Obediah Abbett who was b. about 1806 in SC.His wife was Harriett ?? b. also in SC.They were in Coweta Co., GA, in 1850, in Fayette Co., AL, in 1860.Their son, Obediah Thomas Abbett and wife Sarah Levinia Thornton were in TX by 1880.Any information about this family would be appreciated.Lois Grigsby Irby at cwirby@sage.net